is this common? this is my first fluval and water is leaking from the canister and its not working no water is getting sucked in and yes i did put water into the canisiter what could be wrong anyone know?

timkaren8803 said:my 404 leaks after cleaning it sometimes, check that the O ring is in the right place and that the groove is clean. One day I pumped that primer plunger until my arm was sore before I realized that I had switched the intake and outlet hoses.![]()